Ellsworth, T. P. <br/><br/>
USCG group control and communications system study :  Coast Guard organization manual / 
by T. P. Ellsworth and W. H. Serstad 
 - Washington :  Dept. of Transportation, Coast Guard,  1974 
 - Various pagings :  ill. ;  27 cm. 
<br/><br/> Cover title.  Loose-leaf for updating. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communiction systems--Coast Guard.--United States<br/>Telecommunications
<br/><br/><label>Dewey Class. No.: </label>353.007